/* ============================================================
   0xarise.com — shared light-theme base
   Extracted from index.html landing page
   ============================================================ */

/* --- Design Tokens --- */
:root {
  --bg: #f0f0f0;
  --bg-dark: #e6e6e6;
  --text: #0a0a0a;
  --muted: #888;
  --muted-light: #b0b0b0;
  --accent: #22c55e;
  --accent-hover: #16a34a;
  --accent-glow: rgba(34, 197, 94, 0.3);
  --border: #d0d0d0;
  --dot: #0a0a0a;
  --dark-bg: #0a0a0a;
  --dark-text: #f0f0f0;
  --dark-muted: #666;
  --dark-border: #222;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --padding-x: max(5vw, 24px);
  --max-width: 1400px;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

::selection { background: var(--accent); color: var(--bg); }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }

/* --- Navigation (Fixed) --- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px var(--padding-x);
  transition: background 0.3s cubic-bezier(0.23, 1, 0.32, 1),
              backdrop-filter 0.3s;
}

.nav.scrolled {
  background: rgba(240, 240, 240, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-logo {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
}

.nav-logo .prefix { color: var(--muted); font-weight: 400; }

.nav-links { display: flex; gap: 20px; }

.bracket-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  padding: 6px 4px;
  transition: color 0.2s cubic-bezier(0.23, 1, 0.32, 1),
              letter-spacing 0.2s;
}

.bracket-link:hover { color: var(--text); letter-spacing: 0.08em; }
.bracket-link.active { color: var(--text); }

/* --- Section Pattern --- */
.section { padding: 160px var(--padding-x); }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}

.section-heading {
  font-size: clamp(2.2rem, 5vw, 4.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 40px;
}

/* --- Pillar Grid (2-col, 1px hairline borders) --- */
.pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--border);
  gap: 1px;
}

.pillar {
  background: var(--bg);
  padding: 48px;
  transition: background 0.2s ease-out;
}

.pillar:hover { background: var(--bg-dark); }

.pillar-index {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted-light);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.pillar-title {
  font-weight: 900;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.pillar-desc {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--muted);
}

/* --- Footer --- */
.footer {
  display: flex;
  justify-content: space-between;
  padding: 24px var(--padding-x);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--muted-light);
  border-top: 1px solid var(--border);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .pillars { grid-template-columns: 1fr; }
  .nav-links { gap: 12px; }
  .section { padding: 100px var(--padding-x); }
}

@media (max-width: 480px) {
  .bracket-link { font-size: 0.65rem; }
  .section { padding: 80px var(--padding-x); }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}